Solve One Step Equations

adding one step equations

100

a-3 = 8

11

200

a + 8 = 92

84

300

76 = a + 21

55

400

30 = a -120

150

500

23 = a + 9 

14

subtracting one step equations

100

a - 5 = 4

9

200

a - 21 = 49

70

300

300 = a - 180 

480

400

a - 1,820 = 980

2,800

500

4 = a - 28 

32

Algebra Vocabulary

100

What is the term for a letter that represents an unknown number.

variable.

200

What is the inverse operation of addition?

subtraction

300

What is the inverse operation of multiplication?

division

400

What operation is performed when a number is next to a variable?

5x

multiplication

500

What is the name of the number next to a variable?

ex.    3x

coefficient

multiplying one step equations

100

5a = 25

5

200

25a = 625

25

300

486 = 18a 

27

400

108a = 2268

21

500

112 = 14a 

8

dividing one step equations

100

a/7 = 9

-63

200

a/8 = 12

96

300

15 = a/10 

150

400

13 = a/8 

104

500

14 = a/12

168

Substitution

100

x = 20

x - 10

10

200

x = 6

2x - 5

7

300

x = 7

x³ - 19

324

400

x = 12

3/4x + 8

17

500

x = 12  and y = 9

3x + 2y 

54